[Wien] Small bug in userconfig

[David Holec]

Dear Peter and all Wien2k users,

I think there is a small big in the userconfig script. When you do a
fresh installation and $OCTAVE_PATH is not set yet, then the script
fails. I've tracked the problem down to the lines 196, 231, 272 and
314 where it should be '\$OCTAVE_PATH' instead of just '$OCTAVE_PATH'.
At least I needed this change in bash.

I am using the lastes version of Wien2k.

With best regards,
David